alignment with adaptive cruise control / radar

[torinalth]

So my search-fu is weak. I vaguely remember someone bringing up that for the cars with front radar driven adaptive cruise control when lowered they needed some sort of specialist alignment that did both the wheels and the radar sphere due to the new height. I did a lot of searching but couldn't find it again, nor could I find anyone else that had an issue or needed it. Anyone else able to confirm that there is nothing needed? I've decided to go with ST coilovers and install myself, but not sure I want to eat the 700 for the alignment (what I remember reading the post saying) on top of the cost of the coils and replacement bushings.

Side note, I keep seeing conflict on if control arms are needed to keep alignment in spec. is there a final weigh in yet, or a specific height limit before needed?

[RWD2quattro]

My car has been lowered for several years now on KW v3's and I have yet to do anything with my ACC system in terms of alignment. So far, it's worked well. I've raked 57K miles on my car as my daily driver. I also added one more setting (total of 4 via VAGCOM) to close the massive gap with the car in front to mimic EU cars. I say save your $$ unless the system does something weird.